A quantifiler™ trio-based HRM screening assay for the accurate prediction of single source versus mixed biological samples.

At present, the forensic DNA workflow is not capable of providing information about the contributor status (single source vs. multiple contributors) of evidentiary samples prior to end-point analysis. This exacerbates the challenges inherent to mixtures and low-template DNA samples. If additional sample information could be provided earlier in the workflow, protocols could be implemented to mitigate these challenges. An integrated Quantiplex®- high resolution melt (HRM) assay was shown to be effective in distinguishing between single source and mixture DNA samples; however, integration of the HRM assay into a more commonly used chemistry would be beneficial to the practitioner community. Thus, the assay was redesigned as an integrated Quantifiler™ Trio-HRM assay, which included the identification of a new DNA-binding dye, an increased reaction volume, and the establishment of new data analysis and standard curve metrics for all targets. This redesigned assay produced quantification values and qualitative values that were comparable to those produced when the same samples were tested using the standard Quantifiler™ Trio chemistry and settings. Further, STR profiles generated with quantification values produced from the integrated Quantifiler™ Trio-HRM assay and standard Quantifiler™ Trio chemistry were complete and fully concordant. Most importantly, the integrated Quantifiler™ Trio-HRM assay was able to accurately predict whether a sample was single source or a mixture 79.2% of the time, demonstrating the potential of this approach. With the incorporation of an expanded training set for prediction modeling, and completion of critical developmental validation studies, this assay could prove useful to the forensic DNA practitioner community.

Strengthening partnerships between Black Churches and HIV service providers in the United States.

Across the United States, Black Churches play a significant role among the Black community and are increasingly being used to deliver Human Immunodeficiency Virus (HIV) prevention services. This study sought to investigate HIV service providers' strategies for strengthening partnerships with churches to deliver HIV prevention services. Using a community-based participatory research approach, an HIV coalition and an academic institution formed a partnership to address the study aim. Individual interviews (n = 16) were conducted with providers from medical institutions and HIV social support agencies. A thematic analysis focusing on recommendations for addressing the challenges and benefits of partnership with churches for HIV services was conducted. Participants' interest in and intention to work with churches, as well as their comfort level discussing sexual health-related topics with religious congregations, was high. Four themes emerged to highlight the different perspectives of service providers' recommendations for addressing challenges and strengthening partnerships with churches to deliver HIV services including: (1) carefully selecting churches and HIV services to provide, (2) gaining "buy-in" and support of church leadership, (3) taking advantage of conflict with church doctrine, and (4) choosing appropriate delivery strategies. Study findings demonstrate that although challenges exist, heath service providers in this region of the United States may be interested in addressing HIV among faith communities. Study findings also provide concrete solutions to previously documented barriers to HIV prevention in Black Churches. Such information will benefit researchers and practitioners seeking to expand effective HIV prevention efforts with Black Churches in communities who bear a disproportionate burden of HIV infections.

Factors Influencing Black Churches' Readiness to Address HIV.

This study employed a community-based participatory research approach to understand factors that influence church readiness to engage in HIV prevention and treatment activities. A convenience sample of twenty-six Black faith leaders participated in four focus groups. Data analysis was done through qualitative content analysis. Three themes emerged. First, the pastor's blessing and authority as the church's decision-maker determines readiness to engage in HIV prevention. Second, the church's purview of sexual health as part of a holistic ministry facilitates faith leader's readiness. Lastly, securing financial and human resources makes it feasible for faith leaders to implement activities. Findings suggest HIV-related stigma alone does not explain readiness to address HIV. Participants also discussed activities their churches are equipped to handle, including HIV testing events and health fairs.